general problems of the 2007 Kia Motor Optima

My vehicle speed up and slow down all that itself. It will not maintain speed even with my foot steady on the gas. It will not accelerate, but the major problem is my seatbelt gets stuck all the time I’m afraid to get buckled. I am unable to remove my seatbelt multiple times so now I have buckled my seatbelt behind me so I can start getting tickets. I’ve gotten like four tickets because I’m scared to be buckled that it’s not gonna come on down when I need it to be I’ve got 40 bought tickets. I was going about 20 mph when I went to the brakes for my vehicle accelerated by itself crashing into a pillar at the mall. I did call the police.

I was in a crash and I have to say that this is a problem. After I received my car back from the body shop the car has been malfunctioning ! the 2. 7l has stumble on and at acceleration the failure is the throttle position switch this is a safety problem for all driver's that drive a 2007 kia Optima. The malfunction occurs five time's in one day. This problem may cause severe or fatal injuries to the occupants in the vehicle. Nothing was done to correct the failure and the old throttle position switch is available! I really thank that this is found to have a defect that affects safety and the automakers need voluntarily announce a recalls on all the 2007 kia Optima that have the same throttle position switch as this vehicle.

Had ongoing issues in which the car got "stuck" and would not accelerate past 25 mph, even if I "floored" it. I had to take my foot completely off the gas pedal, wait a few seconds (by then the car would be down to 10-15 mph), then try to accelerate again, which sometimes took several tries. I was very worried about getting into an accident when this happened because there was no warning and if you suddenly stop moving at the speed of traffic with no indication you are slowing down, you could easily be hit. In one case, I was trying to pass a slow-moving vehicle going 25 in a 40. I attempted to go around the vehicle, which should have been a pretty low-speed pass, as I only needed to get up to about 35 mph, but the car stopped accelerating at 25 and I could not get past. I had to take my foot off the gas, wait, try again, and repeat this a couple times before the car would accelerate again. This became a very scary situation because by that time, there was oncoming traffic approaching and I was literally stuck in the passing lane. I also had the car just completely lose power and shut off while I was at a red light at a busy urban intersection. Took it to a repair shop. They diagnosed it as a throttle position switch problem, and it cost almost $800 to get it fixed. At first I thought I just had bad luck, but I later found this message board in which people with this same model describe the exact same problems. . Read more...

I have had intermittent issues with acceleration while driving my 2007 kia Optima. When accelerating with the pedal depressed moderately the car will begin to accelerate and then will all of a sudden loose all power. Essentially it seems as though the pedal were completely released. When this happens however, I will try and give it more gas to compensate and tried to release the pedal and reapply pressure to no avail. It will usually take five seconds or so until I regain any sort of acceleration. During one occurrence I have to guide the car to the side of the road and stop for before it would respond again. This problem seems to happen within a few minutes of starting the car in the morning and has occurred about ten times in the last year. This is a dangerous problem because it has happened a few times while crossing a busy intersection without a traffic light. I have almost been hit twice. The car will begin to accelerate and then will just coast, which is particularly problematic with oncoming traffic.